Street-sweeping machine.



Y. CARROLL. 'STREET SWEEPING MACHINE.

APPLICATION FILED MAY 1, 1906.

Pat-@mea Feb. 9, 1909.

0v *j Mime wbt/neon@ fPArnivT-orrion VINDEN-Tf D- CARROLL.' OF l sail,'Fiiaivoisoo, CALIFORNIA v 'No'. 911,702.

' Sil-G vcation of-:L-ettere Patent. j

Pateatd'res, 9, "i909,-

ToalZ whom 'iff/ neg concern: I

Be it known vthat I-,g

VINCENT D. Canoni.,

Machines, Ofx'whicli' the following is a specification. v

f The present invention relates .t improve ments n istreet 'sweepingmachines, and par- .ticularly tothe' constrn'ctionof rotaryA brushes'for vsuch machines. The particular obi'ect .of the, invention vis'to-'provide a 'brush for this purpose which .will adapttself tty-ineqnalities'in the' snrface 'over which i t is'inoved and therebyeEecta-more 'etlicient v cleaning'thaI'i is pos-- sible with theconstructions commonly innse'. In the, accompanying draWingf- F igure11jv is a plan view of a'portion of a street sweeper,"

shaftandprovide'dwith diskLli'ke-fianges 14 havingv itsy 4b ruslficonstructed in' accordance with thepresent invention', Fig. 2 is alongi' tndinal sectional -view through tliefbrnsh, on'

anenlargedscale; Fig. 3 is-a transverse secr" tional vier;1 through thevbrn'sh, o n the line"4 3-.43 of B ig. 9j Fig- V 4 is a'idetail viewillus.- f ti'ating, a', slight modification ofgtheform' voff" shaft' i8and-hub 10i off the brush sections.

invention showninfthe othergres.

Referring to the. drawings-'1, 1 designate' two of the wheels vof streetlsv'vfeeping Inachine, on the axle 2 of'avhichis mounted a driving 4gear3. .This @gear mesh'esfwith 'a' lpinion 4,2 'Which-isI mounted on anAauxiliary shaft- 5, a ,suitable ys 'procketfon Which'iscon-l nected'by'a chain G ivitha sprocket? onthev brush driving-shaft. 8.' 4Thisshaftis jour-- naled in suitable bearings formed at theendsof arms 9extending' rearwardly: from. 1the 'ax e 2.

The brush *comprises a 'seriesof similar sections arranged- -si'd'e 'byside 4about the shaft S and' each independently col'inectedA therewith'-as' hereinafter described. @As shovvmthe hub -or body V10' of eachsection'of the brush Iis providedvvith a passa-gefllQ-the diameter ofwhich fis ,considerably greater 'han' that 'ofy the shaft- 8,'and'the'connection. "between the shaft and .hub V"1s-such thateachsection of the brush free1 to' 'Inove transversely relative to'` theshaft;

The shaftmegbe connected with'4 eacli-o; .x th'esections by any suitablemeans which, 'while 4communia ting the rotary 'movement of the shaft tothe 'brnsh seotion,-will 'permit' the latter to Vmore vertically to,accommodate itself to'A irregularities 1n` "the surfaceeeye' liwhich ifimovea. As'shownii rigs. eine 3,"the hub l'Oof 'each'brush 'sectionisconnected with the shaft by al flexible band 12. It Willbe seen-thatthis connection offers no obstruction to a free vertical; movement .ofthesec'tion relative to the 'shaft so that when `'any-section of thebrushA .ijs moved over `a depression in the surface being cleaned, for

eX'ample,'t-he brush section will lfall until it reachesthebottom ofsuchdepression; and

`similarly if an obstrnction ,o'r elevation is 1n move npfwardly soas'to clear the saine withoiitin 'any manner effecting the vertical p0-sition' of the othersections of the-brush.

Any suitable means may" be `provided for l holdingtheseveralbrushsections in proper position on the sha-ft orI limiting movement thereofl ongitlid-inally.` of Athe shaft.l As shown, suitablecollars 13 arefitted to the of such diameter as to always extend across'driving'-sprocket'-7- may beconnec'ted to. or formed integraL withone'ljof said' collars 13. InFig-i 1s illustrated a slightly modifiedforni of connection 'between .the driving .In thisembodiment'oftheinvention,- the :the-'hubs'of theseveral briish sections.. The

shaft 8 isy provided with radially projecting pins 15, eacli e.\t'end'ing throu h an aperture sa-id 'aperturel being relatively largeso' that ythe 'finge-rio does not interfere with the free "verticalmovement of the brush section While transmitting rotaryniotion .fromthe' driving'shaft. fj- 4 The operation gend :advantages of the, in-

. -ventionwill l-loe'redily understood from the.

foregoing 'descript-ion and 'the drawings. `1R eferring, particularly toFig- 2 it will e 'seen vthatthebrush Willautomat-ically adapt- I n .a'street sweeping machine', the coni- -.binati on of a wheeled support orcarriage,

"n mounted -infbearings 'carried by s'aid .carriage-and adaptedjtobe'revolved as 'the 'i' latterisi moved,v a brush comprising apluralityofsection-s snrroimdingtheshaft and gravity toIapositioneccentric to the shaft, and means4 for;

' nient' from the shaftto the brush.

each' freelyinovableradially of the shaft by '.110transmittingfrotarymove- Sie' . the brush. 'l ln a stieet sweepingmachine,the comloi-nationl of a wheeledfsupport or carriage,`aShaftmounted. in bearings carried by said` carriage and adapted to berevolved as the latter .is moved, a briish comprising a plu# a streetsweeping machine, the com-i l'bination of a wheeled support or carriagea shaft mounted. 1n bearings carried by said 'carriage and adapted to.be revolved as the latter ismoved, a-brush comprising a plurality ofsections each ,circular in 'cross secj tion and extendingcontinuouslyabout the shaft, each of said sections being-freely mov.

able .by gravity toa positiony eecen'tric'to the `shaft as it is movedover. a depression inthe siiifacebeing swept,"and 'means for transitti-ng rotary Vmovement from the-shaft-g-to to said sections from .theshaft.

4. In a street sweeping inachine, the coni.-l

' bination of a wheeled support or carriage, a

Ashaft mounted in bearings carried by said carriage and adapted to' berevolved as'tli'e latter is moved,a brush. comprising a plu-- rality ofsections, each including 'a ring-like hub loosely 'surrounding the shaftwhereby itmay be moved radially to a positionecceii- Vtric tothe shaftas it passes a depression in the surface being,` swept or meetsanobstruction, and-a flexible connection .betweenlthe shaft and eachofsaid brush sections for rotating the latter as the shaft is revolved.

5. In a street' sweeping machine,.the cornbinatioii of a wheeled supportor carriage, a-

shaft mounted in bearings carried by said carriage and adapted to berevolved as the latter is moved, a brush comprising a pluf rality ofsections, each including' a ring-like hub loosely-surrounding the shaft'whereby it may be moved radially to a position eccentric to the-shaftas it'passesa depression in the surface being swept or meets anobstruction, and a band arranged within each of said hubs and having itsends connected to the hub and shaft respectively.

6. In a street sweeping machine, the. combination of a wheeled supportor carriage, ashaft mounted in bearings carried by said carriage andadapted to be revolved as the latter is moved, a brush comprising aphirality of sections each Asurroundin the shaft and mounted to movetransverse y thereof independently of the other' sections, means on theshaft for properly separating said sections, and connections -betweeneach brush section :and the shaft whereby -the brush will rotate as theshaft is revolved.

7. in astreet sweeping machine, the conibinatioii of'a wheeled supportor carriage, a.

-shaft mounted in bear-ings Icarried by said carriage and adapted to berevolved as the latter is moved, a"l`)rushv surrounding said shaft andcomprising a plurality of sections, each adapted to automatically movelto a pol sition eccentric tothe shaft as it passes a depression in thesurface over which the brush travels, and-means for transmitting rotarymovement from the yshaft to each section of 'the brush.

8. ln a street'sweeping machine, the eonibinatioii of a wheeled supportor carriage, a shaft mounted in bearings 4carried -byl said carriage andadaptedto be revolved as the latter is moved, a vbrush comprising aplniality of relatively narrow vsections arranged side by side. aboutthe shaft and each connected with the shaft to be rotated thereby,

each of said brush sections being mounted to automatically move to aposition eccen- 't-ric to theshaft as said section comes into `alinementwith a depression in the surface being'. swept, and means vforpreventing' movement of the sections'longitudinally ot the shaft. y

9. ln a street sweeping machine, the combination .of a'wheeled supportor carriage, a. shaft mounted in bearings' carried by ythe carriage andadapted to be revolved as the carriage is moved, a brushcomprising aplurality of relatively narrow .sections arranged 'side-by side aboutthe shaft., each of said sections being adapted to automatically move toa position .eccentric to the shaft as said section comes into alinementwith a depression in the surface over which the brush is moved, a seriesof plates separating said brush sections and preventing movement thereoflongitudinal of theshaft, and means for transmitting rotary movementfrom the Ashaft to each of said brush sections.

In testimony whereof I affix my signature in presence of two witnesses.

' VINCENT'D CARROLL.

Witnesses:

JAMES LAvLizivn, CHAS. A. WHITMORE.

